I think I mentioned in a previous post but it’s definitely worth mentioning again, I struggled with the claustrophobia and the uncomfortableness. My doc had me wear the mask in the evenings when I was watching TV or reading a book or doing some paperwork. I wore the mask for about an hour each night and then increased the time until I got comfortable with the machine before I ever attempted to sleep with it. Maybe try wearing during the evenings for awhile until you find the right mask and settings.